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arXiv · 1906.07060

The cosmic microwave background spectral modification due to thermal Comptonization in galaxy clusters. Analytical consideration

Lev Titarchuk·Galina Lipunova
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Abstract

See comments. We calculate analytically an effect of the thermal Comptonization on the cosmic microwave background (CMB) photons when they propagate through galaxy clusters. We estimate a deformation of the CMB spectrum due to multiple Compton scattering of the photons off electrons of an optically-thin hot spherical plasma cloud. This new approach allows us to disentangle and determine the optical depth and the electron temperature of a galaxy cluster using the CMB observations.

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Lev Titarchuk, Galina Lipunova. 2019-06-17. The cosmic microwave background spectral modification due to thermal Comptonization in galaxy clusters. Analytical consideration. https://arxiv.org/abs/1906.07060

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